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Paper title is intended as follows: a known second-order closed-loop system due to damping, the transfer function G (s) = 20/s2+ 3s+ 20. Input signal for the unit step signal. For: (1): analytical solution (2 ): The fourth-order R-K method and Adams estimated the numerical solution of correction method. (3): comparison with fourth-order R-K method is not synchronized long calculation accuracy with the analytic solution for comparison, the results are given graphically. ( 4): given by Adams to make the step response graphics. thorough analysis in this document, has the complete source code and simulation graphics, Friend of the study of referential significance.
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